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  • 1
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    Competition between cutaneous vasodilator and vasoconstrictor reflexes in man (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A two-part experiment was carried out on seven men to determine whether skin will respond to increased neurogenic vasoconstrictor activity during heating. The latter was induced by lower body negative pressure of -50 mm Hg applied for 5 of each 15 min in 12 studies with constant, neutral skin temperature (32.2-34.4 C) in a 40-min control period and with skin temperature held at 38 C for 40-70 min. We conclude that during heating, skin retains the ability to vasoconstrict but that this vasoconstriction cannot completely override heat-induced vasodilatation.
    Keywords: BIOSCIENCES
    Type: Journal of Applied Physiology; 35; Dec. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Three-D multilateration: A precision geodetic measurement system (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A technique of satellite geodesy for determining the relative three dimensional coordinates of ground stations within one centimeter over baselines of 20 to 10,000 kilometers is discussed. The system is referred to as 3-D Multilateration and has applications in earthquake hazard assessment, precision surveying, plate tectonics, and orbital mechanics. The accuracy is obtained by using pulsed lasers to obtain simultaneous slant ranges between several ground stations and a moving retroreflector with known trajectory for aiming the lasers.
    Keywords: GEOPHYSICS
    Type: NASA-CR-132251 , JPL-TM-33-605
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Biomedical support systems (1973)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: Biomedical support hardware for SMEAT consisted basically of two systems, the inflight medical support system, and the operational bioinstrumentation system. The former is essentially a diagnostic and therapeutic kit; the latter is a belt equipped with sensors worn by the crewman to permit monitoring of his vital signs. Special attention was given during to the use and verification of the items in the systems so that changes required in the equipment could be pinpointed and effected prior to the Skylab mission. During the in-chamber testing, evaluations were made of the effectiveness of the proposed microbiology procedures, techniques, equipment, and the stability of media and reagents over the extended period of storage.
    Keywords: BIOTECHNOLOGY
    Type: Skylab Med. Expt. Altitude Test (SMEAT); 8 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Angular distributions and polarization fractions of helium resonance radiation (n 1P - 1 1S) in the extreme ultraviolet (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Angular intensity distributions of helium (n 1P - 1 1S) resonance photons with respect to the exciting electron beam are presented. The angular intensity distributions were measured at selected electron impact energies from 25 eV (near threshold) to 150 eV. Polarization fractions (Pi) were obtained by analyzing the data in terms of the theoretical relation between angular intensity distribution and Pi, i.e. Iota (theta) = Iota (90) (1 - Pi sq cos theta). The experimental values for Pi are compared with recent theoretical results and with previous experimental values for the (3 1P - 2 1S) transition.
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: NASA-TM-X-70543 , X-691-73-372
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Observation of cosmic-ray particles with Z greater than 35. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The results of two flights conducted in Texas in September 1968 are reported, giving attention to experimental details, the charge spectrum, and the primary flux of very very heavy cosmic rays. Considerable interest is attached to the observation of uranium, thorium, and transuranic nuclei in the cosmic radiation. It is found that the relative abundances of the charge groups in the ranges from 35 to 40 and from 41 to 50 deviate significantly from solar system abundances.
    Keywords: SPACE RADIATION
    Type: Physical Review D - Particles and Fields; vol. 8
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    The pathology of isolation and inactivation of monkeys (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: BIOSCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Space program payload costs and their possible reduction (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The possible ways by which NASA payload costs might be reduced in the future were studied. The major historical reasons for payload costs being as they were, and if there are technologies (hard and soft), or criteria for technology advances, that could significantly reduce total costs of payloads were examined. Payload costs are placed in historical context. Some historical cost breakdowns for unmanned NASA payloads are presented to suggest where future cost reductions could be most significant. Space programs of NOAA, DoD and COMSAT are then examined to ascertain if payload reductions have been brought about by the operational (as opposed to developmental) nature of such programs, economies of scale, the ability to rely on previously developed technology, or by differing management structures and attitudes. The potential impact was investigated of NASA aircraft-type management on spacecraft program costs, and some examples relating previous costs associated with aircraft costs on the one hand and manned and unmanned costs on the other are included.
    Keywords: SPACE SCIENCES
    Type: NASA-TM-X-62223
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Fracture trends identified by ERTS-1 imagery in Utah and Nevada (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. In the Utah-Nevada area, linear structural trends recorded on ERTS-1 imagery conform in part to previously recognized structures. In addition, the ERTS-1 imagery reveals cryptic structures not previously identified and not readily apparent in other imagery. These structures are illustrated by prominent east-west trending structures which appear to be concentrated in pre-volcanic rocks. This suggests that the structures are older than many of those with other trends which are equally prominent in volcanic and non-volcanic terrain. Since the older east-west structures may have controlled early Tertiary emplacement of magma or the ascent of mineralizing fluids, their recognition is important in minerial exploration. Soil-gas sampling and analysis for mercury content is being continued over structures, and projected trends of buried structures which appear, from studies of ERTS-1 imagery, to be favorable to mineralization. Comparison of ERTS-1 and Skylab imagery indicated that ERTS-1 imagery records more previously unrecognized linear structures than the Skylab imagery. In differentiating and identifying different rock types, the Skylab imagery appears to be more effective.
    Keywords: GEOPHYSICS
    Type: E73-11032 , NASA-CR-133880
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Design of a miniature hydrogen fueled gas turbine engine (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The design, development, and delivery of a miniature hydrogen-fueled gas turbine engine are discussed. The engine was to be sized to approximate a scaled-down lift engine such as the teledyne CAE model 376. As a result, the engine design emerged as a 445N(100 lb.)-thrust engine flowing 0.86 kg (1.9 lbs.) air/sec. A 4-stage compressor was designed at a 4.0 to 1 pressure ratio for the above conditions. The compressor tip diameter was 9.14 cm (3.60 in.). To improve overall engine performance, another compressor with a 4.75 to 1 pressure ratio at the same tip diameter was designed. A matching turbine for each compressor was also designed. The turbine tip diameter was 10.16 cm (4.0 in.). A combustion chamber was designed, built, and tested for this engine. A preliminary design of the mechanical rotating parts also was completed and is discussed. Three exhaust nozzle designs are presented.
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-112173
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Nuclear microprobe analysis of solar proton implantation profiles in lunar rock surfaces (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Discussion of the results of hydrogen (proton) depth profile concentration analyses conducted on selected Apollo 16 rocks. A modeling of solar particle implantation profiles in lunar rocks is shown to trace the evolvement of these profiles under the combined influence of diffusion of atomic particles implanted in the rock, and rock surface erosion. It is also demonstrated that such diffusion may have a significant effect on the shape of the implantation profiles in certain rock materials.
    Keywords: SPACE SCIENCES
    Type: Lunar Science Conference; Mar 05, 1973 - Mar 08, 1973; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
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